drivers/net/ethernet/mellanox/mlx4/en_netdev.c

   1 /*
   2  * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33
  34 #include <linux/etherdevice.h>
  35 #include <linux/tcp.h>
  36 #include <linux/if_vlan.h>
  37 #include <linux/delay.h>
  38 #include <linux/slab.h>
  39 #include <linux/hash.h>
  40 #include <net/ip.h>
  41 #include <net/busy_poll.h>
  42 #include <net/vxlan.h>
  43 #include <net/devlink.h>
  44
  45 #include <linux/mlx4/driver.h>
  46 #include <linux/mlx4/device.h>
  47 #include <linux/mlx4/cmd.h>
  48 #include <linux/mlx4/cq.h>
  49
  50 #include "mlx4_en.h"
  51 #include "en_port.h"
  52
  53 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  54 {
  55         struct mlx4_en_priv *priv = netdev_priv(dev);
  56         int i;
  57         unsigned int offset = 0;
  58
  59         if (up && up != MLX4_EN_NUM_UP)
  60                 return -EINVAL;
  61
  62         netdev_set_num_tc(dev, up);
  63
  64         /* Partition Tx queues evenly amongst UP's */
  65         for (i = 0; i < up; i++) {
  66                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  67                 offset += priv->num_tx_rings_p_up;
  68         }
  69
  70         return 0;
  71 }
  72
  73 static int __mlx4_en_setup_tc(struct net_device *dev, u32 handle, __be16 proto,
  74                               struct tc_to_netdev *tc)
  75 {
  76         if (tc->type != TC_SETUP_MQPRIO)
  77                 return -EINVAL;
  78
  79         return mlx4_en_setup_tc(dev, tc->tc);
  80 }
  81
  82 #ifdef CONFIG_RFS_ACCEL
  83
  84 struct mlx4_en_filter {
  85         struct list_head next;
  86         struct work_struct work;
  87
  88         u8     ip_proto;
  89         __be32 src_ip;
  90         __be32 dst_ip;
  91         __be16 src_port;
  92         __be16 dst_port;
  93
  94         int rxq_index;
  95         struct mlx4_en_priv *priv;
  96         u32 flow_id;                    /* RFS infrastructure id */
  97         int id;                         /* mlx4_en driver id */
  98         u64 reg_id;                     /* Flow steering API id */
  99         u8 activated;                   /* Used to prevent expiry before filter
 100                                          * is attached
 101                                          */
 102         struct hlist_node filter_chain;
 103 };
 104
 105 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 106
 107 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 108 {
 109         switch (ip_proto) {
 110         case IPPROTO_UDP:
 111                 return MLX4_NET_TRANS_RULE_ID_UDP;
 112         case IPPROTO_TCP:
 113                 return MLX4_NET_TRANS_RULE_ID_TCP;
 114         default:
 115                 return MLX4_NET_TRANS_RULE_NUM;
 116         }
 117 };
 118
 119 static void mlx4_en_filter_work(struct work_struct *work)
 120 {
 121         struct mlx4_en_filter *filter = container_of(work,
 122                                                      struct mlx4_en_filter,
 123                                                      work);
 124         struct mlx4_en_priv *priv = filter->priv;
 125         struct mlx4_spec_list spec_tcp_udp = {
 126                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 127                 {
 128                         .tcp_udp = {
 129                                 .dst_port = filter->dst_port,
 130                                 .dst_port_msk = (__force __be16)-1,
 131                                 .src_port = filter->src_port,
 132                                 .src_port_msk = (__force __be16)-1,
 133                         },
 134                 },
 135         };
 136         struct mlx4_spec_list spec_ip = {
 137                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 138                 {
 139                         .ipv4 = {
 140                                 .dst_ip = filter->dst_ip,
 141                                 .dst_ip_msk = (__force __be32)-1,
 142                                 .src_ip = filter->src_ip,
 143                                 .src_ip_msk = (__force __be32)-1,
 144                         },
 145                 },
 146         };
 147         struct mlx4_spec_list spec_eth = {
 148                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 149         };
 150         struct mlx4_net_trans_rule rule = {
 151                 .list = LIST_HEAD_INIT(rule.list),
 152                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 153                 .exclusive = 1,
 154                 .allow_loopback = 1,
 155                 .promisc_mode = MLX4_FS_REGULAR,
 156                 .port = priv->port,
 157                 .priority = MLX4_DOMAIN_RFS,
 158         };
 159         int rc;
 160         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 161
 162         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 163                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 164                         filter->ip_proto);
 165                 goto ignore;
 166         }
 167         list_add_tail(&spec_eth.list, &rule.list);
 168         list_add_tail(&spec_ip.list, &rule.list);
 169         list_add_tail(&spec_tcp_udp.list, &rule.list);
 170
 171         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 172         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 173         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 174
 175         filter->activated = 0;
 176
 177         if (filter->reg_id) {
 178                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 179                 if (rc && rc != -ENOENT)
 180                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 181         }
 182
 183         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 184         if (rc)
 185                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 186
 187 ignore:
 188         mlx4_en_filter_rfs_expire(priv);
 189
 190         filter->activated = 1;
 191 }
 192
 193 static inline struct hlist_head *
 194 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 195                    __be16 src_port, __be16 dst_port)
 196 {
 197         unsigned long l;
 198         int bucket_idx;
 199
 200         l = (__force unsigned long)src_port |
 201             ((__force unsigned long)dst_port << 2);
 202         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 203
 204         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 205
 206         return &priv->filter_hash[bucket_idx];
 207 }
 208
 209 static struct mlx4_en_filter *
 210 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 211                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 212                      __be16 dst_port, u32 flow_id)
 213 {
 214         struct mlx4_en_filter *filter = NULL;
 215
 216         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 217         if (!filter)
 218                 return NULL;
 219
 220         filter->priv = priv;
 221         filter->rxq_index = rxq_index;
 222         INIT_WORK(&filter->work, mlx4_en_filter_work);
 223
 224         filter->src_ip = src_ip;
 225         filter->dst_ip = dst_ip;
 226         filter->ip_proto = ip_proto;
 227         filter->src_port = src_port;
 228         filter->dst_port = dst_port;
 229
 230         filter->flow_id = flow_id;
 231
 232         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 233
 234         list_add_tail(&filter->next, &priv->filters);
 235         hlist_add_head(&filter->filter_chain,
 236                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 237                                           dst_port));
 238
 239         return filter;
 240 }
 241
 242 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 243 {
 244         struct mlx4_en_priv *priv = filter->priv;
 245         int rc;
 246
 247         list_del(&filter->next);
 248
 249         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 250         if (rc && rc != -ENOENT)
 251                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 252
 253         kfree(filter);
 254 }
 255
 256 static inline struct mlx4_en_filter *
 257 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 258                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 259 {
 260         struct mlx4_en_filter *filter;
 261         struct mlx4_en_filter *ret = NULL;
 262
 263         hlist_for_each_entry(filter,
 264                              filter_hash_bucket(priv, src_ip, dst_ip,
 265                                                 src_port, dst_port),
 266                              filter_chain) {
 267                 if (filter->src_ip == src_ip &&
 268                     filter->dst_ip == dst_ip &&
 269                     filter->ip_proto == ip_proto &&
 270                     filter->src_port == src_port &&
 271                     filter->dst_port == dst_port) {
 272                         ret = filter;
 273                         break;
 274                 }
 275         }
 276
 277         return ret;
 278 }
 279
 280 static int
 281 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 282                    u16 rxq_index, u32 flow_id)
 283 {
 284         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 285         struct mlx4_en_filter *filter;
 286         const struct iphdr *ip;
 287         const __be16 *ports;
 288         u8 ip_proto;
 289         __be32 src_ip;
 290         __be32 dst_ip;
 291         __be16 src_port;
 292         __be16 dst_port;
 293         int nhoff = skb_network_offset(skb);
 294         int ret = 0;
 295
 296         if (skb->protocol != htons(ETH_P_IP))
 297                 return -EPROTONOSUPPORT;
 298
 299         ip = (const struct iphdr *)(skb->data + nhoff);
 300         if (ip_is_fragment(ip))
 301                 return -EPROTONOSUPPORT;
 302
 303         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 304                 return -EPROTONOSUPPORT;
 305         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 306
 307         ip_proto = ip->protocol;
 308         src_ip = ip->saddr;
 309         dst_ip = ip->daddr;
 310         src_port = ports[0];
 311         dst_port = ports[1];
 312
 313         spin_lock_bh(&priv->filters_lock);
 314         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 315                                      src_port, dst_port);
 316         if (filter) {
 317                 if (filter->rxq_index == rxq_index)
 318                         goto out;
 319
 320                 filter->rxq_index = rxq_index;
 321         } else {
 322                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 323                                               src_ip, dst_ip, ip_proto,
 324                                               src_port, dst_port, flow_id);
 325                 if (!filter) {
 326                         ret = -ENOMEM;
 327                         goto err;
 328                 }
 329         }
 330
 331         queue_work(priv->mdev->workqueue, &filter->work);
 332
 333 out:
 334         ret = filter->id;
 335 err:
 336         spin_unlock_bh(&priv->filters_lock);
 337
 338         return ret;
 339 }
 340
 341 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 342 {
 343         struct mlx4_en_filter *filter, *tmp;
 344         LIST_HEAD(del_list);
 345
 346         spin_lock_bh(&priv->filters_lock);
 347         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 348                 list_move(&filter->next, &del_list);
 349                 hlist_del(&filter->filter_chain);
 350         }
 351         spin_unlock_bh(&priv->filters_lock);
 352
 353         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 354                 cancel_work_sync(&filter->work);
 355                 mlx4_en_filter_free(filter);
 356         }
 357 }
 358
 359 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 360 {
 361         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 362         LIST_HEAD(del_list);
 363         int i = 0;
 364
 365         spin_lock_bh(&priv->filters_lock);
 366         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 367                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 368                         break;
 369
 370                 if (filter->activated &&
 371                     !work_pending(&filter->work) &&
 372                     rps_may_expire_flow(priv->dev,
 373                                         filter->rxq_index, filter->flow_id,
 374                                         filter->id)) {
 375                         list_move(&filter->next, &del_list);
 376                         hlist_del(&filter->filter_chain);
 377                 } else
 378                         last_filter = filter;
 379
 380                 i++;
 381         }
 382
 383         if (last_filter && (&last_filter->next != priv->filters.next))
 384                 list_move(&priv->filters, &last_filter->next);
 385
 386         spin_unlock_bh(&priv->filters_lock);
 387
 388         list_for_each_entry_safe(filter, tmp, &del_list, next)
 389                 mlx4_en_filter_free(filter);
 390 }
 391 #endif
 392
 393 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 394                                    __be16 proto, u16 vid)
 395 {
 396         struct mlx4_en_priv *priv = netdev_priv(dev);
 397         struct mlx4_en_dev *mdev = priv->mdev;
 398         int err;
 399         int idx;
 400
 401         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 402
 403         set_bit(vid, priv->active_vlans);
 404
 405         /* Add VID to port VLAN filter */
 406         mutex_lock(&mdev->state_lock);
 407         if (mdev->device_up && priv->port_up) {
 408                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 409                 if (err)
 410                         en_err(priv, "Failed configuring VLAN filter\n");
 411         }
 412         if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
 413                 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
 414         mutex_unlock(&mdev->state_lock);
 415
 416         return 0;
 417 }
 418
 419 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 420                                     __be16 proto, u16 vid)
 421 {
 422         struct mlx4_en_priv *priv = netdev_priv(dev);
 423         struct mlx4_en_dev *mdev = priv->mdev;
 424         int err;
 425
 426         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 427
 428         clear_bit(vid, priv->active_vlans);
 429
 430         /* Remove VID from port VLAN filter */
 431         mutex_lock(&mdev->state_lock);
 432         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 433
 434         if (mdev->device_up && priv->port_up) {
 435                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 436                 if (err)
 437                         en_err(priv, "Failed configuring VLAN filter\n");
 438         }
 439         mutex_unlock(&mdev->state_lock);
 440
 441         return 0;
 442 }
 443
 444 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 445 {
 446         int i;
 447         for (i = ETH_ALEN - 1; i >= 0; --i) {
 448                 dst_mac[i] = src_mac & 0xff;
 449                 src_mac >>= 8;
 450         }
 451         memset(&dst_mac[ETH_ALEN], 0, 2);
 452 }
 453
 454
 455 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 456                                     int qpn, u64 *reg_id)
 457 {
 458         int err;
 459
 460         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 461             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 462                 return 0; /* do nothing */
 463
 464         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 465                                     MLX4_DOMAIN_NIC, reg_id);
 466         if (err) {
 467                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 468                 return err;
 469         }
 470         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 471         return 0;
 472 }
 473
 474
 475 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 476                                 unsigned char *mac, int *qpn, u64 *reg_id)
 477 {
 478         struct mlx4_en_dev *mdev = priv->mdev;
 479         struct mlx4_dev *dev = mdev->dev;
 480         int err;
 481
 482         switch (dev->caps.steering_mode) {
 483         case MLX4_STEERING_MODE_B0: {
 484                 struct mlx4_qp qp;
 485                 u8 gid[16] = {0};
 486
 487                 qp.qpn = *qpn;
 488                 memcpy(&gid[10], mac, ETH_ALEN);
 489                 gid[5] = priv->port;
 490
 491                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 492                 break;
 493         }
 494         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 495                 struct mlx4_spec_list spec_eth = { {NULL} };
 496                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 497
 498                 struct mlx4_net_trans_rule rule = {
 499                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 500                         .exclusive = 0,
 501                         .allow_loopback = 1,
 502                         .promisc_mode = MLX4_FS_REGULAR,
 503                         .priority = MLX4_DOMAIN_NIC,
 504                 };
 505
 506                 rule.port = priv->port;
 507                 rule.qpn = *qpn;
 508                 INIT_LIST_HEAD(&rule.list);
 509
 510                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 511                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 512                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 513                 list_add_tail(&spec_eth.list, &rule.list);
 514
 515                 err = mlx4_flow_attach(dev, &rule, reg_id);
 516                 break;
 517         }
 518         default:
 519                 return -EINVAL;
 520         }
 521         if (err)
 522                 en_warn(priv, "Failed Attaching Unicast\n");
 523
 524         return err;
 525 }
 526
 527 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 528                                      unsigned char *mac, int qpn, u64 reg_id)
 529 {
 530         struct mlx4_en_dev *mdev = priv->mdev;
 531         struct mlx4_dev *dev = mdev->dev;
 532
 533         switch (dev->caps.steering_mode) {
 534         case MLX4_STEERING_MODE_B0: {
 535                 struct mlx4_qp qp;
 536                 u8 gid[16] = {0};
 537
 538                 qp.qpn = qpn;
 539                 memcpy(&gid[10], mac, ETH_ALEN);
 540                 gid[5] = priv->port;
 541
 542                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 543                 break;
 544         }
 545         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 546                 mlx4_flow_detach(dev, reg_id);
 547                 break;
 548         }
 549         default:
 550                 en_err(priv, "Invalid steering mode.\n");
 551         }
 552 }
 553
 554 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 555 {
 556         struct mlx4_en_dev *mdev = priv->mdev;
 557         struct mlx4_dev *dev = mdev->dev;
 558         int index = 0;
 559         int err = 0;
 560         int *qpn = &priv->base_qpn;
 561         u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 562
 563         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 564                priv->dev->dev_addr);
 565         index = mlx4_register_mac(dev, priv->port, mac);
 566         if (index < 0) {
 567                 err = index;
 568                 en_err(priv, "Failed adding MAC: %pM\n",
 569                        priv->dev->dev_addr);
 570                 return err;
 571         }
 572
 573         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 574                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 575                 *qpn = base_qpn + index;
 576                 return 0;
 577         }
 578
 579         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
 580         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 581         if (err) {
 582                 en_err(priv, "Failed to reserve qp for mac registration\n");
 583                 mlx4_unregister_mac(dev, priv->port, mac);
 584                 return err;
 585         }
 586
 587         return 0;
 588 }
 589
 590 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 591 {
 592         struct mlx4_en_dev *mdev = priv->mdev;
 593         struct mlx4_dev *dev = mdev->dev;
 594         int qpn = priv->base_qpn;
 595
 596         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 597                 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 598                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 599                        priv->dev->dev_addr);
 600                 mlx4_unregister_mac(dev, priv->port, mac);
 601         } else {
 602                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 603                        priv->port, qpn);
 604                 mlx4_qp_release_range(dev, qpn, 1);
 605                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 606         }
 607 }
 608
 609 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 610                                unsigned char *new_mac, unsigned char *prev_mac)
 611 {
 612         struct mlx4_en_dev *mdev = priv->mdev;
 613         struct mlx4_dev *dev = mdev->dev;
 614         int err = 0;
 615         u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
 616
 617         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 618                 struct hlist_head *bucket;
 619                 unsigned int mac_hash;
 620                 struct mlx4_mac_entry *entry;
 621                 struct hlist_node *tmp;
 622                 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
 623
 624                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 625                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 626                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 627                                 mlx4_en_uc_steer_release(priv, entry->mac,
 628                                                          qpn, entry->reg_id);
 629                                 mlx4_unregister_mac(dev, priv->port,
 630                                                     prev_mac_u64);
 631                                 hlist_del_rcu(&entry->hlist);
 632                                 synchronize_rcu();
 633                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 634                                 entry->reg_id = 0;
 635                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 636                                 hlist_add_head_rcu(&entry->hlist,
 637                                                    &priv->mac_hash[mac_hash]);
 638                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 639                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 640                                                            &qpn,
 641                                                            &entry->reg_id);
 642                                 if (err)
 643                                         return err;
 644                                 if (priv->tunnel_reg_id) {
 645                                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 646                                         priv->tunnel_reg_id = 0;
 647                                 }
 648                                 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 649                                                                &priv->tunnel_reg_id);
 650                                 return err;
 651                         }
 652                 }
 653                 return -EINVAL;
 654         }
 655
 656         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 657 }
 658
 659 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
 660                               unsigned char new_mac[ETH_ALEN + 2])
 661 {
 662         int err = 0;
 663
 664         if (priv->port_up) {
 665                 /* Remove old MAC and insert the new one */
 666                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 667                                           new_mac, priv->current_mac);
 668                 if (err)
 669                         en_err(priv, "Failed changing HW MAC address\n");
 670         } else
 671                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 672
 673         if (!err)
 674                 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
 675
 676         return err;
 677 }
 678
 679 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 680 {
 681         struct mlx4_en_priv *priv = netdev_priv(dev);
 682         struct mlx4_en_dev *mdev = priv->mdev;
 683         struct sockaddr *saddr = addr;
 684         unsigned char new_mac[ETH_ALEN + 2];
 685         int err;
 686
 687         if (!is_valid_ether_addr(saddr->sa_data))
 688                 return -EADDRNOTAVAIL;
 689
 690         mutex_lock(&mdev->state_lock);
 691         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 692         err = mlx4_en_do_set_mac(priv, new_mac);
 693         if (!err)
 694                 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 695         mutex_unlock(&mdev->state_lock);
 696
 697         return err;
 698 }
 699
 700 static void mlx4_en_clear_list(struct net_device *dev)
 701 {
 702         struct mlx4_en_priv *priv = netdev_priv(dev);
 703         struct mlx4_en_mc_list *tmp, *mc_to_del;
 704
 705         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 706                 list_del(&mc_to_del->list);
 707                 kfree(mc_to_del);
 708         }
 709 }
 710
 711 static void mlx4_en_cache_mclist(struct net_device *dev)
 712 {
 713         struct mlx4_en_priv *priv = netdev_priv(dev);
 714         struct netdev_hw_addr *ha;
 715         struct mlx4_en_mc_list *tmp;
 716
 717         mlx4_en_clear_list(dev);
 718         netdev_for_each_mc_addr(ha, dev) {
 719                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 720                 if (!tmp) {
 721                         mlx4_en_clear_list(dev);
 722                         return;
 723                 }
 724                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 725                 list_add_tail(&tmp->list, &priv->mc_list);
 726         }
 727 }
 728
 729 static void update_mclist_flags(struct mlx4_en_priv *priv,
 730                                 struct list_head *dst,
 731                                 struct list_head *src)
 732 {
 733         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 734         bool found;
 735
 736         /* Find all the entries that should be removed from dst,
 737          * These are the entries that are not found in src
 738          */
 739         list_for_each_entry(dst_tmp, dst, list) {
 740                 found = false;
 741                 list_for_each_entry(src_tmp, src, list) {
 742                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 743                                 found = true;
 744                                 break;
 745                         }
 746                 }
 747                 if (!found)
 748                         dst_tmp->action = MCLIST_REM;
 749         }
 750
 751         /* Add entries that exist in src but not in dst
 752          * mark them as need to add
 753          */
 754         list_for_each_entry(src_tmp, src, list) {
 755                 found = false;
 756                 list_for_each_entry(dst_tmp, dst, list) {
 757                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 758                                 dst_tmp->action = MCLIST_NONE;
 759                                 found = true;
 760                                 break;
 761                         }
 762                 }
 763                 if (!found) {
 764                         new_mc = kmemdup(src_tmp,
 765                                          sizeof(struct mlx4_en_mc_list),
 766                                          GFP_KERNEL);
 767                         if (!new_mc)
 768                                 return;
 769
 770                         new_mc->action = MCLIST_ADD;
 771                         list_add_tail(&new_mc->list, dst);
 772                 }
 773         }
 774 }
 775
 776 static void mlx4_en_set_rx_mode(struct net_device *dev)
 777 {
 778         struct mlx4_en_priv *priv = netdev_priv(dev);
 779
 780         if (!priv->port_up)
 781                 return;
 782
 783         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 784 }
 785
 786 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 787                                      struct mlx4_en_dev *mdev)
 788 {
 789         int err = 0;
 790
 791         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 792                 if (netif_msg_rx_status(priv))
 793                         en_warn(priv, "Entering promiscuous mode\n");
 794                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 795
 796                 /* Enable promiscouos mode */
 797                 switch (mdev->dev->caps.steering_mode) {
 798                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 799                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 800                                                           priv->port,
 801                                                           priv->base_qpn,
 802                                                           MLX4_FS_ALL_DEFAULT);
 803                         if (err)
 804                                 en_err(priv, "Failed enabling promiscuous mode\n");
 805                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 806                         break;
 807
 808                 case MLX4_STEERING_MODE_B0:
 809                         err = mlx4_unicast_promisc_add(mdev->dev,
 810                                                        priv->base_qpn,
 811                                                        priv->port);
 812                         if (err)
 813                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 814
 815                         /* Add the default qp number as multicast
 816                          * promisc
 817                          */
 818                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 819                                 err = mlx4_multicast_promisc_add(mdev->dev,
 820                                                                  priv->base_qpn,
 821                                                                  priv->port);
 822                                 if (err)
 823                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 824                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 825                         }
 826                         break;
 827
 828                 case MLX4_STEERING_MODE_A0:
 829                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 830                                                      priv->port,
 831                                                      priv->base_qpn,
 832                                                      1);
 833                         if (err)
 834                                 en_err(priv, "Failed enabling promiscuous mode\n");
 835                         break;
 836                 }
 837
 838                 /* Disable port multicast filter (unconditionally) */
 839                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 840                                           0, MLX4_MCAST_DISABLE);
 841                 if (err)
 842                         en_err(priv, "Failed disabling multicast filter\n");
 843         }
 844 }
 845
 846 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 847                                        struct mlx4_en_dev *mdev)
 848 {
 849         int err = 0;
 850
 851         if (netif_msg_rx_status(priv))
 852                 en_warn(priv, "Leaving promiscuous mode\n");
 853         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 854
 855         /* Disable promiscouos mode */
 856         switch (mdev->dev->caps.steering_mode) {
 857         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 858                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 859                                                      priv->port,
 860                                                      MLX4_FS_ALL_DEFAULT);
 861                 if (err)
 862                         en_err(priv, "Failed disabling promiscuous mode\n");
 863                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 864                 break;
 865
 866         case MLX4_STEERING_MODE_B0:
 867                 err = mlx4_unicast_promisc_remove(mdev->dev,
 868                                                   priv->base_qpn,
 869                                                   priv->port);
 870                 if (err)
 871                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 872                 /* Disable Multicast promisc */
 873                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 874                         err = mlx4_multicast_promisc_remove(mdev->dev,
 875                                                             priv->base_qpn,
 876                                                             priv->port);
 877                         if (err)
 878                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 879                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 880                 }
 881                 break;
 882
 883         case MLX4_STEERING_MODE_A0:
 884                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 885                                              priv->port,
 886                                              priv->base_qpn, 0);
 887                 if (err)
 888                         en_err(priv, "Failed disabling promiscuous mode\n");
 889                 break;
 890         }
 891 }
 892
 893 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 894                                  struct net_device *dev,
 895                                  struct mlx4_en_dev *mdev)
 896 {
 897         struct mlx4_en_mc_list *mclist, *tmp;
 898         u64 mcast_addr = 0;
 899         u8 mc_list[16] = {0};
 900         int err = 0;
 901
 902         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 903         if (dev->flags & IFF_ALLMULTI) {
 904                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 905                                           0, MLX4_MCAST_DISABLE);
 906                 if (err)
 907                         en_err(priv, "Failed disabling multicast filter\n");
 908
 909                 /* Add the default qp number as multicast promisc */
 910                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 911                         switch (mdev->dev->caps.steering_mode) {
 912                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 913                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 914                                                                   priv->port,
 915                                                                   priv->base_qpn,
 916                                                                   MLX4_FS_MC_DEFAULT);
 917                                 break;
 918
 919                         case MLX4_STEERING_MODE_B0:
 920                                 err = mlx4_multicast_promisc_add(mdev->dev,
 921                                                                  priv->base_qpn,
 922                                                                  priv->port);
 923                                 break;
 924
 925                         case MLX4_STEERING_MODE_A0:
 926                                 break;
 927                         }
 928                         if (err)
 929                                 en_err(priv, "Failed entering multicast promisc mode\n");
 930                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 931                 }
 932         } else {
 933                 /* Disable Multicast promisc */
 934                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 935                         switch (mdev->dev->caps.steering_mode) {
 936                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 937                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 938                                                                      priv->port,
 939                                                                      MLX4_FS_MC_DEFAULT);
 940                                 break;
 941
 942                         case MLX4_STEERING_MODE_B0:
 943                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 944                                                                     priv->base_qpn,
 945                                                                     priv->port);
 946                                 break;
 947
 948                         case MLX4_STEERING_MODE_A0:
 949                                 break;
 950                         }
 951                         if (err)
 952                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 953                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 954                 }
 955
 956                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 957                                           0, MLX4_MCAST_DISABLE);
 958                 if (err)
 959                         en_err(priv, "Failed disabling multicast filter\n");
 960
 961                 /* Flush mcast filter and init it with broadcast address */
 962                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 963                                     1, MLX4_MCAST_CONFIG);
 964
 965                 /* Update multicast list - we cache all addresses so they won't
 966                  * change while HW is updated holding the command semaphor */
 967                 netif_addr_lock_bh(dev);
 968                 mlx4_en_cache_mclist(dev);
 969                 netif_addr_unlock_bh(dev);
 970                 list_for_each_entry(mclist, &priv->mc_list, list) {
 971                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
 972                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
 973                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
 974                 }
 975                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 976                                           0, MLX4_MCAST_ENABLE);
 977                 if (err)
 978                         en_err(priv, "Failed enabling multicast filter\n");
 979
 980                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
 981                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
 982                         if (mclist->action == MCLIST_REM) {
 983                                 /* detach this address and delete from list */
 984                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
 985                                 mc_list[5] = priv->port;
 986                                 err = mlx4_multicast_detach(mdev->dev,
 987                                                             &priv->rss_map.indir_qp,
 988                                                             mc_list,
 989                                                             MLX4_PROT_ETH,
 990                                                             mclist->reg_id);
 991                                 if (err)
 992                                         en_err(priv, "Fail to detach multicast address\n");
 993
 994                                 if (mclist->tunnel_reg_id) {
 995                                         err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
 996                                         if (err)
 997                                                 en_err(priv, "Failed to detach multicast address\n");
 998                                 }
 999
1000                                 /* remove from list */
1001                                 list_del(&mclist->list);
1002                                 kfree(mclist);
1003                         } else if (mclist->action == MCLIST_ADD) {
1004                                 /* attach the address */
1005                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1006                                 /* needed for B0 steering support */
1007                                 mc_list[5] = priv->port;
1008                                 err = mlx4_multicast_attach(mdev->dev,
1009                                                             &priv->rss_map.indir_qp,
1010                                                             mc_list,
1011                                                             priv->port, 0,
1012                                                             MLX4_PROT_ETH,
1013                                                             &mclist->reg_id);
1014                                 if (err)
1015                                         en_err(priv, "Fail to attach multicast address\n");
1016
1017                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1018                                                                &mclist->tunnel_reg_id);
1019                                 if (err)
1020                                         en_err(priv, "Failed to attach multicast address\n");
1021                         }
1022                 }
1023         }
1024 }
1025
1026 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1027                                  struct net_device *dev,
1028                                  struct mlx4_en_dev *mdev)
1029 {
1030         struct netdev_hw_addr *ha;
1031         struct mlx4_mac_entry *entry;
1032         struct hlist_node *tmp;
1033         bool found;
1034         u64 mac;
1035         int err = 0;
1036         struct hlist_head *bucket;
1037         unsigned int i;
1038         int removed = 0;
1039         u32 prev_flags;
1040
1041         /* Note that we do not need to protect our mac_hash traversal with rcu,
1042          * since all modification code is protected by mdev->state_lock
1043          */
1044
1045         /* find what to remove */
1046         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1047                 bucket = &priv->mac_hash[i];
1048                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1049                         found = false;
1050                         netdev_for_each_uc_addr(ha, dev) {
1051                                 if (ether_addr_equal_64bits(entry->mac,
1052                                                             ha->addr)) {
1053                                         found = true;
1054                                         break;
1055                                 }
1056                         }
1057
1058                         /* MAC address of the port is not in uc list */
1059                         if (ether_addr_equal_64bits(entry->mac,
1060                                                     priv->current_mac))
1061                                 found = true;
1062
1063                         if (!found) {
1064                                 mac = mlx4_mac_to_u64(entry->mac);
1065                                 mlx4_en_uc_steer_release(priv, entry->mac,
1066                                                          priv->base_qpn,
1067                                                          entry->reg_id);
1068                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1069
1070                                 hlist_del_rcu(&entry->hlist);
1071                                 kfree_rcu(entry, rcu);
1072                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1073                                        entry->mac, priv->port);
1074                                 ++removed;
1075                         }
1076                 }
1077         }
1078
1079         /* if we didn't remove anything, there is no use in trying to add
1080          * again once we are in a forced promisc mode state
1081          */
1082         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1083                 return;
1084
1085         prev_flags = priv->flags;
1086         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1087
1088         /* find what to add */
1089         netdev_for_each_uc_addr(ha, dev) {
1090                 found = false;
1091                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1092                 hlist_for_each_entry(entry, bucket, hlist) {
1093                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1094                                 found = true;
1095                                 break;
1096                         }
1097                 }
1098
1099                 if (!found) {
1100                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1101                         if (!entry) {
1102                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1103                                        ha->addr, priv->port);
1104                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1105                                 break;
1106                         }
1107                         mac = mlx4_mac_to_u64(ha->addr);
1108                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1109                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1110                         if (err < 0) {
1111                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1112                                        ha->addr, priv->port, err);
1113                                 kfree(entry);
1114                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1115                                 break;
1116                         }
1117                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1118                                                    &priv->base_qpn,
1119                                                    &entry->reg_id);
1120                         if (err) {
1121                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1122                                        ha->addr, priv->port, err);
1123                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1124                                 kfree(entry);
1125                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1126                                 break;
1127                         } else {
1128                                 unsigned int mac_hash;
1129                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1130                                        ha->addr, priv->port);
1131                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1132                                 bucket = &priv->mac_hash[mac_hash];
1133                                 hlist_add_head_rcu(&entry->hlist, bucket);
1134                         }
1135                 }
1136         }
1137
1138         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1139                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1140                         priv->port);
1141         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1142                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1143                         priv->port);
1144         }
1145 }
1146
1147 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1148 {
1149         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1150                                                  rx_mode_task);
1151         struct mlx4_en_dev *mdev = priv->mdev;
1152         struct net_device *dev = priv->dev;
1153
1154         mutex_lock(&mdev->state_lock);
1155         if (!mdev->device_up) {
1156                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1157                 goto out;
1158         }
1159         if (!priv->port_up) {
1160                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1161                 goto out;
1162         }
1163
1164         if (!netif_carrier_ok(dev)) {
1165                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1166                         if (priv->port_state.link_state) {
1167                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1168                                 netif_carrier_on(dev);
1169                                 en_dbg(LINK, priv, "Link Up\n");
1170                         }
1171                 }
1172         }
1173
1174         if (dev->priv_flags & IFF_UNICAST_FLT)
1175                 mlx4_en_do_uc_filter(priv, dev, mdev);
1176
1177         /* Promsicuous mode: disable all filters */
1178         if ((dev->flags & IFF_PROMISC) ||
1179             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1180                 mlx4_en_set_promisc_mode(priv, mdev);
1181                 goto out;
1182         }
1183
1184         /* Not in promiscuous mode */
1185         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1186                 mlx4_en_clear_promisc_mode(priv, mdev);
1187
1188         mlx4_en_do_multicast(priv, dev, mdev);
1189 out:
1190         mutex_unlock(&mdev->state_lock);
1191 }
1192
1193 #ifdef CONFIG_NET_POLL_CONTROLLER
1194 static void mlx4_en_netpoll(struct net_device *dev)
1195 {
1196         struct mlx4_en_priv *priv = netdev_priv(dev);
1197         struct mlx4_en_cq *cq;
1198         int i;
1199
1200         for (i = 0; i < priv->rx_ring_num; i++) {
1201                 cq = priv->rx_cq[i];
1202                 napi_schedule(&cq->napi);
1203         }
1204 }
1205 #endif
1206
1207 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1208 {
1209         u64 reg_id;
1210         int err = 0;
1211         int *qpn = &priv->base_qpn;
1212         struct mlx4_mac_entry *entry;
1213
1214         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1215         if (err)
1216                 return err;
1217
1218         err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1219                                        &priv->tunnel_reg_id);
1220         if (err)
1221                 goto tunnel_err;
1222
1223         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1224         if (!entry) {
1225                 err = -ENOMEM;
1226                 goto alloc_err;
1227         }
1228
1229         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1230         memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1231         entry->reg_id = reg_id;
1232         hlist_add_head_rcu(&entry->hlist,
1233                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1234
1235         return 0;
1236
1237 alloc_err:
1238         if (priv->tunnel_reg_id)
1239                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1240
1241 tunnel_err:
1242         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1243         return err;
1244 }
1245
1246 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1247 {
1248         u64 mac;
1249         unsigned int i;
1250         int qpn = priv->base_qpn;
1251         struct hlist_head *bucket;
1252         struct hlist_node *tmp;
1253         struct mlx4_mac_entry *entry;
1254
1255         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1256                 bucket = &priv->mac_hash[i];
1257                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1258                         mac = mlx4_mac_to_u64(entry->mac);
1259                         en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1260                                entry->mac);
1261                         mlx4_en_uc_steer_release(priv, entry->mac,
1262                                                  qpn, entry->reg_id);
1263
1264                         mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1265                         hlist_del_rcu(&entry->hlist);
1266                         kfree_rcu(entry, rcu);
1267                 }
1268         }
1269
1270         if (priv->tunnel_reg_id) {
1271                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1272                 priv->tunnel_reg_id = 0;
1273         }
1274 }
1275
1276 static void mlx4_en_tx_timeout(struct net_device *dev)
1277 {
1278         struct mlx4_en_priv *priv = netdev_priv(dev);
1279         struct mlx4_en_dev *mdev = priv->mdev;
1280         int i;
1281
1282         if (netif_msg_timer(priv))
1283                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1284
1285         for (i = 0; i < priv->tx_ring_num; i++) {
1286                 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1287                         continue;
1288                 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1289                         i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1290                         priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1291         }
1292
1293         priv->port_stats.tx_timeout++;
1294         en_dbg(DRV, priv, "Scheduling watchdog\n");
1295         queue_work(mdev->workqueue, &priv->watchdog_task);
1296 }
1297
1298
1299 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1300 {
1301         struct mlx4_en_priv *priv = netdev_priv(dev);
1302
1303         spin_lock_bh(&priv->stats_lock);
1304         memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1305         spin_unlock_bh(&priv->stats_lock);
1306
1307         return &priv->ret_stats;
1308 }
1309
1310 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1311 {
1312         struct mlx4_en_cq *cq;
1313         int i;
1314
1315         /* If we haven't received a specific coalescing setting
1316          * (module param), we set the moderation parameters as follows:
1317          * - moder_cnt is set to the number of mtu sized packets to
1318          *   satisfy our coalescing target.
1319          * - moder_time is set to a fixed value.
1320          */
1321         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1322         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1323         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1324         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1325         en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1326                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1327
1328         /* Setup cq moderation params */
1329         for (i = 0; i < priv->rx_ring_num; i++) {
1330                 cq = priv->rx_cq[i];
1331                 cq->moder_cnt = priv->rx_frames;
1332                 cq->moder_time = priv->rx_usecs;
1333                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1334                 priv->last_moder_packets[i] = 0;
1335                 priv->last_moder_bytes[i] = 0;
1336         }
1337
1338         for (i = 0; i < priv->tx_ring_num; i++) {
1339                 cq = priv->tx_cq[i];
1340                 cq->moder_cnt = priv->tx_frames;
1341                 cq->moder_time = priv->tx_usecs;
1342         }
1343
1344         /* Reset auto-moderation params */
1345         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1346         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1347         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1348         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1349         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1350         priv->adaptive_rx_coal = 1;
1351         priv->last_moder_jiffies = 0;
1352         priv->last_moder_tx_packets = 0;
1353 }
1354
1355 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1356 {
1357         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1358         struct mlx4_en_cq *cq;
1359         unsigned long packets;
1360         unsigned long rate;
1361         unsigned long avg_pkt_size;
1362         unsigned long rx_packets;
1363         unsigned long rx_bytes;
1364         unsigned long rx_pkt_diff;
1365         int moder_time;
1366         int ring, err;
1367
1368         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1369                 return;
1370
1371         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1372                 spin_lock_bh(&priv->stats_lock);
1373                 rx_packets = priv->rx_ring[ring]->packets;
1374                 rx_bytes = priv->rx_ring[ring]->bytes;
1375                 spin_unlock_bh(&priv->stats_lock);
1376
1377                 rx_pkt_diff = ((unsigned long) (rx_packets -
1378                                 priv->last_moder_packets[ring]));
1379                 packets = rx_pkt_diff;
1380                 rate = packets * HZ / period;
1381                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1382                                 priv->last_moder_bytes[ring])) / packets : 0;
1383
1384                 /* Apply auto-moderation only when packet rate
1385                  * exceeds a rate that it matters */
1386                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1387                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1388                         if (rate < priv->pkt_rate_low)
1389                                 moder_time = priv->rx_usecs_low;
1390                         else if (rate > priv->pkt_rate_high)
1391                                 moder_time = priv->rx_usecs_high;
1392                         else
1393                                 moder_time = (rate - priv->pkt_rate_low) *
1394                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1395                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1396                                         priv->rx_usecs_low;
1397                 } else {
1398                         moder_time = priv->rx_usecs_low;
1399                 }
1400
1401                 if (moder_time != priv->last_moder_time[ring]) {
1402                         priv->last_moder_time[ring] = moder_time;
1403                         cq = priv->rx_cq[ring];
1404                         cq->moder_time = moder_time;
1405                         cq->moder_cnt = priv->rx_frames;
1406                         err = mlx4_en_set_cq_moder(priv, cq);
1407                         if (err)
1408                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1409                                        ring);
1410                 }
1411                 priv->last_moder_packets[ring] = rx_packets;
1412                 priv->last_moder_bytes[ring] = rx_bytes;
1413         }
1414
1415         priv->last_moder_jiffies = jiffies;
1416 }
1417
1418 static void mlx4_en_do_get_stats(struct work_struct *work)
1419 {
1420         struct delayed_work *delay = to_delayed_work(work);
1421         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1422                                                  stats_task);
1423         struct mlx4_en_dev *mdev = priv->mdev;
1424         int err;
1425
1426         mutex_lock(&mdev->state_lock);
1427         if (mdev->device_up) {
1428                 if (priv->port_up) {
1429                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1430                         if (err)
1431                                 en_dbg(HW, priv, "Could not update stats\n");
1432
1433                         mlx4_en_auto_moderation(priv);
1434                 }
1435
1436                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1437         }
1438         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1439                 mlx4_en_do_set_mac(priv, priv->current_mac);
1440                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1441         }
1442         mutex_unlock(&mdev->state_lock);
1443 }
1444
1445 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1446  * periodically
1447  */
1448 static void mlx4_en_service_task(struct work_struct *work)
1449 {
1450         struct delayed_work *delay = to_delayed_work(work);
1451         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1452                                                  service_task);
1453         struct mlx4_en_dev *mdev = priv->mdev;
1454
1455         mutex_lock(&mdev->state_lock);
1456         if (mdev->device_up) {
1457                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1458                         mlx4_en_ptp_overflow_check(mdev);
1459
1460                 mlx4_en_recover_from_oom(priv);
1461                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1462                                    SERVICE_TASK_DELAY);
1463         }
1464         mutex_unlock(&mdev->state_lock);
1465 }
1466
1467 static void mlx4_en_linkstate(struct work_struct *work)
1468 {
1469         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1470                                                  linkstate_task);
1471         struct mlx4_en_dev *mdev = priv->mdev;
1472         int linkstate = priv->link_state;
1473
1474         mutex_lock(&mdev->state_lock);
1475         /* If observable port state changed set carrier state and
1476          * report to system log */
1477         if (priv->last_link_state != linkstate) {
1478                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1479                         en_info(priv, "Link Down\n");
1480                         netif_carrier_off(priv->dev);
1481                 } else {
1482                         en_info(priv, "Link Up\n");
1483                         netif_carrier_on(priv->dev);
1484                 }
1485         }
1486         priv->last_link_state = linkstate;
1487         mutex_unlock(&mdev->state_lock);
1488 }
1489
1490 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1491 {
1492         struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1493         int numa_node = priv->mdev->dev->numa_node;
1494
1495         if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1496                 return -ENOMEM;
1497
1498         cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1499                         ring->affinity_mask);
1500         return 0;
1501 }
1502
1503 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1504 {
1505         free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1506 }
1507
1508 int mlx4_en_start_port(struct net_device *dev)
1509 {
1510         struct mlx4_en_priv *priv = netdev_priv(dev);
1511         struct mlx4_en_dev *mdev = priv->mdev;
1512         struct mlx4_en_cq *cq;
1513         struct mlx4_en_tx_ring *tx_ring;
1514         int rx_index = 0;
1515         int tx_index = 0;
1516         int err = 0;
1517         int i;
1518         int j;
1519         u8 mc_list[16] = {0};
1520
1521         if (priv->port_up) {
1522                 en_dbg(DRV, priv, "start port called while port already up\n");
1523                 return 0;
1524         }
1525
1526         INIT_LIST_HEAD(&priv->mc_list);
1527         INIT_LIST_HEAD(&priv->curr_list);
1528         INIT_LIST_HEAD(&priv->ethtool_list);
1529         memset(&priv->ethtool_rules[0], 0,
1530                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1531
1532         /* Calculate Rx buf size */
1533         dev->mtu = min(dev->mtu, priv->max_mtu);
1534         mlx4_en_calc_rx_buf(dev);
1535         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1536
1537         /* Configure rx cq's and rings */
1538         err = mlx4_en_activate_rx_rings(priv);
1539         if (err) {
1540                 en_err(priv, "Failed to activate RX rings\n");
1541                 return err;
1542         }
1543         for (i = 0; i < priv->rx_ring_num; i++) {
1544                 cq = priv->rx_cq[i];
1545
1546                 err = mlx4_en_init_affinity_hint(priv, i);
1547                 if (err) {
1548                         en_err(priv, "Failed preparing IRQ affinity hint\n");
1549                         goto cq_err;
1550                 }
1551
1552                 err = mlx4_en_activate_cq(priv, cq, i);
1553                 if (err) {
1554                         en_err(priv, "Failed activating Rx CQ\n");
1555                         mlx4_en_free_affinity_hint(priv, i);
1556                         goto cq_err;
1557                 }
1558
1559                 for (j = 0; j < cq->size; j++) {
1560                         struct mlx4_cqe *cqe = NULL;
1561
1562                         cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1563                               priv->cqe_factor;
1564                         cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1565                 }
1566
1567                 err = mlx4_en_set_cq_moder(priv, cq);
1568                 if (err) {
1569                         en_err(priv, "Failed setting cq moderation parameters\n");
1570                         mlx4_en_deactivate_cq(priv, cq);
1571                         mlx4_en_free_affinity_hint(priv, i);
1572                         goto cq_err;
1573                 }
1574                 mlx4_en_arm_cq(priv, cq);
1575                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1576                 ++rx_index;
1577         }
1578
1579         /* Set qp number */
1580         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1581         err = mlx4_en_get_qp(priv);
1582         if (err) {
1583                 en_err(priv, "Failed getting eth qp\n");
1584                 goto cq_err;
1585         }
1586         mdev->mac_removed[priv->port] = 0;
1587
1588         priv->counter_index =
1589                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1590
1591         err = mlx4_en_config_rss_steer(priv);
1592         if (err) {
1593                 en_err(priv, "Failed configuring rss steering\n");
1594                 goto mac_err;
1595         }
1596
1597         err = mlx4_en_create_drop_qp(priv);
1598         if (err)
1599                 goto rss_err;
1600
1601         /* Configure tx cq's and rings */
1602         for (i = 0; i < priv->tx_ring_num; i++) {
1603                 /* Configure cq */
1604                 cq = priv->tx_cq[i];
1605                 err = mlx4_en_activate_cq(priv, cq, i);
1606                 if (err) {
1607                         en_err(priv, "Failed allocating Tx CQ\n");
1608                         goto tx_err;
1609                 }
1610                 err = mlx4_en_set_cq_moder(priv, cq);
1611                 if (err) {
1612                         en_err(priv, "Failed setting cq moderation parameters\n");
1613                         mlx4_en_deactivate_cq(priv, cq);
1614                         goto tx_err;
1615                 }
1616                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1617                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1618
1619                 /* Configure ring */
1620                 tx_ring = priv->tx_ring[i];
1621                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1622                         i / priv->num_tx_rings_p_up);
1623                 if (err) {
1624                         en_err(priv, "Failed allocating Tx ring\n");
1625                         mlx4_en_deactivate_cq(priv, cq);
1626                         goto tx_err;
1627                 }
1628                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1629
1630                 /* Arm CQ for TX completions */
1631                 mlx4_en_arm_cq(priv, cq);
1632
1633                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1634                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1635                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1636                 ++tx_index;
1637         }
1638
1639         /* Configure port */
1640         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1641                                     priv->rx_skb_size + ETH_FCS_LEN,
1642                                     priv->prof->tx_pause,
1643                                     priv->prof->tx_ppp,
1644                                     priv->prof->rx_pause,
1645                                     priv->prof->rx_ppp);
1646         if (err) {
1647                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1648                        priv->port, err);
1649                 goto tx_err;
1650         }
1651         /* Set default qp number */
1652         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1653         if (err) {
1654                 en_err(priv, "Failed setting default qp numbers\n");
1655                 goto tx_err;
1656         }
1657
1658         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1659                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1660                 if (err) {
1661                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1662                                err);
1663                         goto tx_err;
1664                 }
1665         }
1666
1667         /* Init port */
1668         en_dbg(HW, priv, "Initializing port\n");
1669         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1670         if (err) {
1671                 en_err(priv, "Failed Initializing port\n");
1672                 goto tx_err;
1673         }
1674
1675         /* Set Unicast and VXLAN steering rules */
1676         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1677             mlx4_en_set_rss_steer_rules(priv))
1678                 mlx4_warn(mdev, "Failed setting steering rules\n");
1679
1680         /* Attach rx QP to bradcast address */
1681         eth_broadcast_addr(&mc_list[10]);
1682         mc_list[5] = priv->port; /* needed for B0 steering support */
1683         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1684                                   priv->port, 0, MLX4_PROT_ETH,
1685                                   &priv->broadcast_id))
1686                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1687
1688         /* Must redo promiscuous mode setup. */
1689         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1690
1691         /* Schedule multicast task to populate multicast list */
1692         queue_work(mdev->workqueue, &priv->rx_mode_task);
1693
1694 #ifdef CONFIG_MLX4_EN_VXLAN
1695         if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1696                 vxlan_get_rx_port(dev);
1697 #endif
1698         priv->port_up = true;
1699         netif_tx_start_all_queues(dev);
1700         netif_device_attach(dev);
1701
1702         return 0;
1703
1704 tx_err:
1705         while (tx_index--) {
1706                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1707                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1708         }
1709         mlx4_en_destroy_drop_qp(priv);
1710 rss_err:
1711         mlx4_en_release_rss_steer(priv);
1712 mac_err:
1713         mlx4_en_put_qp(priv);
1714 cq_err:
1715         while (rx_index--) {
1716                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1717                 mlx4_en_free_affinity_hint(priv, rx_index);
1718         }
1719         for (i = 0; i < priv->rx_ring_num; i++)
1720                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1721
1722         return err; /* need to close devices */
1723 }
1724
1725
1726 void mlx4_en_stop_port(struct net_device *dev, int detach)
1727 {
1728         struct mlx4_en_priv *priv = netdev_priv(dev);
1729         struct mlx4_en_dev *mdev = priv->mdev;
1730         struct mlx4_en_mc_list *mclist, *tmp;
1731         struct ethtool_flow_id *flow, *tmp_flow;
1732         int i;
1733         u8 mc_list[16] = {0};
1734
1735         if (!priv->port_up) {
1736                 en_dbg(DRV, priv, "stop port called while port already down\n");
1737                 return;
1738         }
1739
1740         /* close port*/
1741         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1742
1743         /* Synchronize with tx routine */
1744         netif_tx_lock_bh(dev);
1745         if (detach)
1746                 netif_device_detach(dev);
1747         netif_tx_stop_all_queues(dev);
1748         netif_tx_unlock_bh(dev);
1749
1750         netif_tx_disable(dev);
1751
1752         /* Set port as not active */
1753         priv->port_up = false;
1754         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1755
1756         /* Promsicuous mode */
1757         if (mdev->dev->caps.steering_mode ==
1758             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1759                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1760                                  MLX4_EN_FLAG_MC_PROMISC);
1761                 mlx4_flow_steer_promisc_remove(mdev->dev,
1762                                                priv->port,
1763                                                MLX4_FS_ALL_DEFAULT);
1764                 mlx4_flow_steer_promisc_remove(mdev->dev,
1765                                                priv->port,
1766                                                MLX4_FS_MC_DEFAULT);
1767         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1768                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1769
1770                 /* Disable promiscouos mode */
1771                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1772                                             priv->port);
1773
1774                 /* Disable Multicast promisc */
1775                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1776                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1777                                                       priv->port);
1778                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1779                 }
1780         }
1781
1782         /* Detach All multicasts */
1783         eth_broadcast_addr(&mc_list[10]);
1784         mc_list[5] = priv->port; /* needed for B0 steering support */
1785         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1786                               MLX4_PROT_ETH, priv->broadcast_id);
1787         list_for_each_entry(mclist, &priv->curr_list, list) {
1788                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1789                 mc_list[5] = priv->port;
1790                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1791                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1792                 if (mclist->tunnel_reg_id)
1793                         mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1794         }
1795         mlx4_en_clear_list(dev);
1796         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1797                 list_del(&mclist->list);
1798                 kfree(mclist);
1799         }
1800
1801         /* Flush multicast filter */
1802         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1803
1804         /* Remove flow steering rules for the port*/
1805         if (mdev->dev->caps.steering_mode ==
1806             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1807                 ASSERT_RTNL();
1808                 list_for_each_entry_safe(flow, tmp_flow,
1809                                          &priv->ethtool_list, list) {
1810                         mlx4_flow_detach(mdev->dev, flow->id);
1811                         list_del(&flow->list);
1812                 }
1813         }
1814
1815         mlx4_en_destroy_drop_qp(priv);
1816
1817         /* Free TX Rings */
1818         for (i = 0; i < priv->tx_ring_num; i++) {
1819                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1820                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1821         }
1822         msleep(10);
1823
1824         for (i = 0; i < priv->tx_ring_num; i++)
1825                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1826
1827         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1828                 mlx4_en_delete_rss_steer_rules(priv);
1829
1830         /* Free RSS qps */
1831         mlx4_en_release_rss_steer(priv);
1832
1833         /* Unregister Mac address for the port */
1834         mlx4_en_put_qp(priv);
1835         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1836                 mdev->mac_removed[priv->port] = 1;
1837
1838         /* Free RX Rings */
1839         for (i = 0; i < priv->rx_ring_num; i++) {
1840                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1841
1842                 napi_synchronize(&cq->napi);
1843                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1844                 mlx4_en_deactivate_cq(priv, cq);
1845
1846                 mlx4_en_free_affinity_hint(priv, i);
1847         }
1848 }
1849
1850 static void mlx4_en_restart(struct work_struct *work)
1851 {
1852         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1853                                                  watchdog_task);
1854         struct mlx4_en_dev *mdev = priv->mdev;
1855         struct net_device *dev = priv->dev;
1856
1857         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1858
1859         rtnl_lock();
1860         mutex_lock(&mdev->state_lock);
1861         if (priv->port_up) {
1862                 mlx4_en_stop_port(dev, 1);
1863                 if (mlx4_en_start_port(dev))
1864                         en_err(priv, "Failed restarting port %d\n", priv->port);
1865         }
1866         mutex_unlock(&mdev->state_lock);
1867         rtnl_unlock();
1868 }
1869
1870 static void mlx4_en_clear_stats(struct net_device *dev)
1871 {
1872         struct mlx4_en_priv *priv = netdev_priv(dev);
1873         struct mlx4_en_dev *mdev = priv->mdev;
1874         int i;
1875
1876         if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1877                 en_dbg(HW, priv, "Failed dumping statistics\n");
1878
1879         memset(&priv->stats, 0, sizeof(priv->stats));
1880         memset(&priv->pstats, 0, sizeof(priv->pstats));
1881         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1882         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1883         memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
1884         memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
1885         memset(&priv->rx_priority_flowstats, 0,
1886                sizeof(priv->rx_priority_flowstats));
1887         memset(&priv->tx_priority_flowstats, 0,
1888                sizeof(priv->tx_priority_flowstats));
1889         memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
1890
1891         for (i = 0; i < priv->tx_ring_num; i++) {
1892                 priv->tx_ring[i]->bytes = 0;
1893                 priv->tx_ring[i]->packets = 0;
1894                 priv->tx_ring[i]->tx_csum = 0;
1895         }
1896         for (i = 0; i < priv->rx_ring_num; i++) {
1897                 priv->rx_ring[i]->bytes = 0;
1898                 priv->rx_ring[i]->packets = 0;
1899                 priv->rx_ring[i]->csum_ok = 0;
1900                 priv->rx_ring[i]->csum_none = 0;
1901                 priv->rx_ring[i]->csum_complete = 0;
1902         }
1903 }
1904
1905 static int mlx4_en_open(struct net_device *dev)
1906 {
1907         struct mlx4_en_priv *priv = netdev_priv(dev);
1908         struct mlx4_en_dev *mdev = priv->mdev;
1909         int err = 0;
1910
1911         mutex_lock(&mdev->state_lock);
1912
1913         if (!mdev->device_up) {
1914                 en_err(priv, "Cannot open - device down/disabled\n");
1915                 err = -EBUSY;
1916                 goto out;
1917         }
1918
1919         /* Reset HW statistics and SW counters */
1920         mlx4_en_clear_stats(dev);
1921
1922         err = mlx4_en_start_port(dev);
1923         if (err)
1924                 en_err(priv, "Failed starting port:%d\n", priv->port);
1925
1926 out:
1927         mutex_unlock(&mdev->state_lock);
1928         return err;
1929 }
1930
1931
1932 static int mlx4_en_close(struct net_device *dev)
1933 {
1934         struct mlx4_en_priv *priv = netdev_priv(dev);
1935         struct mlx4_en_dev *mdev = priv->mdev;
1936
1937         en_dbg(IFDOWN, priv, "Close port called\n");
1938
1939         mutex_lock(&mdev->state_lock);
1940
1941         mlx4_en_stop_port(dev, 0);
1942         netif_carrier_off(dev);
1943
1944         mutex_unlock(&mdev->state_lock);
1945         return 0;
1946 }
1947
1948 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1949 {
1950         int i;
1951
1952 #ifdef CONFIG_RFS_ACCEL
1953         priv->dev->rx_cpu_rmap = NULL;
1954 #endif
1955
1956         for (i = 0; i < priv->tx_ring_num; i++) {
1957                 if (priv->tx_ring && priv->tx_ring[i])
1958                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1959                 if (priv->tx_cq && priv->tx_cq[i])
1960                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1961         }
1962
1963         for (i = 0; i < priv->rx_ring_num; i++) {
1964                 if (priv->rx_ring[i])
1965                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1966                                 priv->prof->rx_ring_size, priv->stride);
1967                 if (priv->rx_cq[i])
1968                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1969         }
1970
1971 }
1972
1973 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1974 {
1975         struct mlx4_en_port_profile *prof = priv->prof;
1976         int i;
1977         int node;
1978
1979         /* Create tx Rings */
1980         for (i = 0; i < priv->tx_ring_num; i++) {
1981                 node = cpu_to_node(i % num_online_cpus());
1982                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1983                                       prof->tx_ring_size, i, TX, node))
1984                         goto err;
1985
1986                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1987                                            prof->tx_ring_size, TXBB_SIZE,
1988                                            node, i))
1989                         goto err;
1990         }
1991
1992         /* Create rx Rings */
1993         for (i = 0; i < priv->rx_ring_num; i++) {
1994                 node = cpu_to_node(i % num_online_cpus());
1995                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1996                                       prof->rx_ring_size, i, RX, node))
1997                         goto err;
1998
1999                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2000                                            prof->rx_ring_size, priv->stride,
2001                                            node))
2002                         goto err;
2003         }
2004
2005 #ifdef CONFIG_RFS_ACCEL
2006         priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2007 #endif
2008
2009         return 0;
2010
2011 err:
2012         en_err(priv, "Failed to allocate NIC resources\n");
2013         for (i = 0; i < priv->rx_ring_num; i++) {
2014                 if (priv->rx_ring[i])
2015                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2016                                                 prof->rx_ring_size,
2017                                                 priv->stride);
2018                 if (priv->rx_cq[i])
2019                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2020         }
2021         for (i = 0; i < priv->tx_ring_num; i++) {
2022                 if (priv->tx_ring[i])
2023                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2024                 if (priv->tx_cq[i])
2025                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2026         }
2027         return -ENOMEM;
2028 }
2029
2030
2031 void mlx4_en_destroy_netdev(struct net_device *dev)
2032 {
2033         struct mlx4_en_priv *priv = netdev_priv(dev);
2034         struct mlx4_en_dev *mdev = priv->mdev;
2035
2036         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2037
2038         /* Unregister device - this will close the port if it was up */
2039         if (priv->registered) {
2040                 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev,
2041                                                               priv->port));
2042                 unregister_netdev(dev);
2043         }
2044
2045         if (priv->allocated)
2046                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2047
2048         cancel_delayed_work(&priv->stats_task);
2049         cancel_delayed_work(&priv->service_task);
2050         /* flush any pending task for this netdev */
2051         flush_workqueue(mdev->workqueue);
2052
2053         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2054                 mlx4_en_remove_timestamp(mdev);
2055
2056         /* Detach the netdev so tasks would not attempt to access it */
2057         mutex_lock(&mdev->state_lock);
2058         mdev->pndev[priv->port] = NULL;
2059         mdev->upper[priv->port] = NULL;
2060         mutex_unlock(&mdev->state_lock);
2061
2062         mlx4_en_free_resources(priv);
2063
2064         kfree(priv->tx_ring);
2065         kfree(priv->tx_cq);
2066
2067         free_netdev(dev);
2068 }
2069
2070 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2071 {
2072         struct mlx4_en_priv *priv = netdev_priv(dev);
2073         struct mlx4_en_dev *mdev = priv->mdev;
2074         int err = 0;
2075
2076         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2077                  dev->mtu, new_mtu);
2078
2079         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2080                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2081                 return -EPERM;
2082         }
2083         dev->mtu = new_mtu;
2084
2085         if (netif_running(dev)) {
2086                 mutex_lock(&mdev->state_lock);
2087                 if (!mdev->device_up) {
2088                         /* NIC is probably restarting - let watchdog task reset
2089                          * the port */
2090                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2091                 } else {
2092                         mlx4_en_stop_port(dev, 1);
2093                         err = mlx4_en_start_port(dev);
2094                         if (err) {
2095                                 en_err(priv, "Failed restarting port:%d\n",
2096                                          priv->port);
2097                                 queue_work(mdev->workqueue, &priv->watchdog_task);
2098                         }
2099                 }
2100                 mutex_unlock(&mdev->state_lock);
2101         }
2102         return 0;
2103 }
2104
2105 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2106 {
2107         struct mlx4_en_priv *priv = netdev_priv(dev);
2108         struct mlx4_en_dev *mdev = priv->mdev;
2109         struct hwtstamp_config config;
2110
2111         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2112                 return -EFAULT;
2113
2114         /* reserved for future extensions */
2115         if (config.flags)
2116                 return -EINVAL;
2117
2118         /* device doesn't support time stamping */
2119         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2120                 return -EINVAL;
2121
2122         /* TX HW timestamp */
2123         switch (config.tx_type) {
2124         case HWTSTAMP_TX_OFF:
2125         case HWTSTAMP_TX_ON:
2126                 break;
2127         default:
2128                 return -ERANGE;
2129         }
2130
2131         /* RX HW timestamp */
2132         switch (config.rx_filter) {
2133         case HWTSTAMP_FILTER_NONE:
2134                 break;
2135         case HWTSTAMP_FILTER_ALL:
2136         case HWTSTAMP_FILTER_SOME:
2137         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2138         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2139         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2140         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2141         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2142         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2143         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2144         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2145         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2146         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2147         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2148         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2149                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2150                 break;
2151         default:
2152                 return -ERANGE;
2153         }
2154
2155         if (mlx4_en_reset_config(dev, config, dev->features)) {
2156                 config.tx_type = HWTSTAMP_TX_OFF;
2157                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2158         }
2159
2160         return copy_to_user(ifr->ifr_data, &config,
2161                             sizeof(config)) ? -EFAULT : 0;
2162 }
2163
2164 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2165 {
2166         struct mlx4_en_priv *priv = netdev_priv(dev);
2167
2168         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2169                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2170 }
2171
2172 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2173 {
2174         switch (cmd) {
2175         case SIOCSHWTSTAMP:
2176                 return mlx4_en_hwtstamp_set(dev, ifr);
2177         case SIOCGHWTSTAMP:
2178                 return mlx4_en_hwtstamp_get(dev, ifr);
2179         default:
2180                 return -EOPNOTSUPP;
2181         }
2182 }
2183
2184 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2185                                               netdev_features_t features)
2186 {
2187         struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2188         struct mlx4_en_dev *mdev = en_priv->mdev;
2189
2190         /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2191          * enable/disable make sure S-TAG flag is always in same state as
2192          * C-TAG.
2193          */
2194         if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2195             !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2196                 features |= NETIF_F_HW_VLAN_STAG_RX;
2197         else
2198                 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2199
2200         return features;
2201 }
2202
2203 static int mlx4_en_set_features(struct net_device *netdev,
2204                 netdev_features_t features)
2205 {
2206         struct mlx4_en_priv *priv = netdev_priv(netdev);
2207         bool reset = false;
2208         int ret = 0;
2209
2210         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2211                 en_info(priv, "Turn %s RX-FCS\n",
2212                         (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2213                 reset = true;
2214         }
2215
2216         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2217                 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2218
2219                 en_info(priv, "Turn %s RX-ALL\n",
2220                         ignore_fcs_value ? "ON" : "OFF");
2221                 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2222                                               priv->port, ignore_fcs_value);
2223                 if (ret)
2224                         return ret;
2225         }
2226
2227         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2228                 en_info(priv, "Turn %s RX vlan strip offload\n",
2229                         (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2230                 reset = true;
2231         }
2232
2233         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2234                 en_info(priv, "Turn %s TX vlan strip offload\n",
2235                         (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2236
2237         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2238                 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2239                         (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2240
2241         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2242                 en_info(priv, "Turn %s loopback\n",
2243                         (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2244                 mlx4_en_update_loopback_state(netdev, features);
2245         }
2246
2247         if (reset) {
2248                 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2249                                            features);
2250                 if (ret)
2251                         return ret;
2252         }
2253
2254         return 0;
2255 }
2256
2257 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2258 {
2259         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2260         struct mlx4_en_dev *mdev = en_priv->mdev;
2261         u64 mac_u64 = mlx4_mac_to_u64(mac);
2262
2263         if (is_multicast_ether_addr(mac))
2264                 return -EINVAL;
2265
2266         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2267 }
2268
2269 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2270 {
2271         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2272         struct mlx4_en_dev *mdev = en_priv->mdev;
2273
2274         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2275 }
2276
2277 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2278                                int max_tx_rate)
2279 {
2280         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2281         struct mlx4_en_dev *mdev = en_priv->mdev;
2282
2283         return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2284                                 max_tx_rate);
2285 }
2286
2287 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2288 {
2289         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2290         struct mlx4_en_dev *mdev = en_priv->mdev;
2291
2292         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2293 }
2294
2295 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2296 {
2297         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2298         struct mlx4_en_dev *mdev = en_priv->mdev;
2299
2300         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2301 }
2302
2303 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2304 {
2305         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2306         struct mlx4_en_dev *mdev = en_priv->mdev;
2307
2308         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2309 }
2310
2311 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2312                                 struct ifla_vf_stats *vf_stats)
2313 {
2314         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2315         struct mlx4_en_dev *mdev = en_priv->mdev;
2316
2317         return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2318 }
2319
2320 #define PORT_ID_BYTE_LEN 8
2321 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2322                                     struct netdev_phys_item_id *ppid)
2323 {
2324         struct mlx4_en_priv *priv = netdev_priv(dev);
2325         struct mlx4_dev *mdev = priv->mdev->dev;
2326         int i;
2327         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2328
2329         if (!phys_port_id)
2330                 return -EOPNOTSUPP;
2331
2332         ppid->id_len = sizeof(phys_port_id);
2333         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2334                 ppid->id[i] =  phys_port_id & 0xff;
2335                 phys_port_id >>= 8;
2336         }
2337         return 0;
2338 }
2339
2340 #ifdef CONFIG_MLX4_EN_VXLAN
2341 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2342 {
2343         int ret;
2344         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2345                                                  vxlan_add_task);
2346
2347         ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2348         if (ret)
2349                 goto out;
2350
2351         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2352                                   VXLAN_STEER_BY_OUTER_MAC, 1);
2353 out:
2354         if (ret) {
2355                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2356                 return;
2357         }
2358
2359         /* set offloads */
2360         priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2361                                       NETIF_F_RXCSUM |
2362                                       NETIF_F_TSO | NETIF_F_TSO6 |
2363                                       NETIF_F_GSO_UDP_TUNNEL |
2364                                       NETIF_F_GSO_UDP_TUNNEL_CSUM |
2365                                       NETIF_F_GSO_PARTIAL;
2366 }
2367
2368 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2369 {
2370         int ret;
2371         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2372                                                  vxlan_del_task);
2373         /* unset offloads */
2374         priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2375                                         NETIF_F_RXCSUM |
2376                                         NETIF_F_TSO | NETIF_F_TSO6 |
2377                                         NETIF_F_GSO_UDP_TUNNEL |
2378                                         NETIF_F_GSO_UDP_TUNNEL_CSUM |
2379                                         NETIF_F_GSO_PARTIAL);
2380
2381         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2382                                   VXLAN_STEER_BY_OUTER_MAC, 0);
2383         if (ret)
2384                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2385
2386         priv->vxlan_port = 0;
2387 }
2388
2389 static void mlx4_en_add_vxlan_port(struct  net_device *dev,
2390                                    sa_family_t sa_family, __be16 port)
2391 {
2392         struct mlx4_en_priv *priv = netdev_priv(dev);
2393         __be16 current_port;
2394
2395         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2396                 return;
2397
2398         if (sa_family == AF_INET6)
2399                 return;
2400
2401         current_port = priv->vxlan_port;
2402         if (current_port && current_port != port) {
2403                 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2404                         ntohs(current_port), ntohs(port));
2405                 return;
2406         }
2407
2408         priv->vxlan_port = port;
2409         queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2410 }
2411
2412 static void mlx4_en_del_vxlan_port(struct  net_device *dev,
2413                                    sa_family_t sa_family, __be16 port)
2414 {
2415         struct mlx4_en_priv *priv = netdev_priv(dev);
2416         __be16 current_port;
2417
2418         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2419                 return;
2420
2421         if (sa_family == AF_INET6)
2422                 return;
2423
2424         current_port = priv->vxlan_port;
2425         if (current_port != port) {
2426                 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2427                 return;
2428         }
2429
2430         queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2431 }
2432
2433 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2434                                                 struct net_device *dev,
2435                                                 netdev_features_t features)
2436 {
2437         features = vlan_features_check(skb, features);
2438         features = vxlan_features_check(skb, features);
2439
2440         /* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2441          * support inner IPv6 checksums and segmentation so  we need to
2442          * strip that feature if this is an IPv6 encapsulated frame.
2443          */
2444         if (skb->encapsulation &&
2445             (skb->ip_summed == CHECKSUM_PARTIAL) &&
2446             (ip_hdr(skb)->version != 4))
2447                 features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2448
2449         return features;
2450 }
2451 #endif
2452
2453 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2454 {
2455         struct mlx4_en_priv *priv = netdev_priv(dev);
2456         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index];
2457         struct mlx4_update_qp_params params;
2458         int err;
2459
2460         if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2461                 return -EOPNOTSUPP;
2462
2463         /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2464         if (maxrate >> 12) {
2465                 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2466                 params.rate_val  = maxrate / 1000;
2467         } else if (maxrate) {
2468                 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2469                 params.rate_val  = maxrate;
2470         } else { /* zero serves to revoke the QP rate-limitation */
2471                 params.rate_unit = 0;
2472                 params.rate_val  = 0;
2473         }
2474
2475         err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2476                              &params);
2477         return err;
2478 }
2479
2480 static const struct net_device_ops mlx4_netdev_ops = {
2481         .ndo_open               = mlx4_en_open,
2482         .ndo_stop               = mlx4_en_close,
2483         .ndo_start_xmit         = mlx4_en_xmit,
2484         .ndo_select_queue       = mlx4_en_select_queue,
2485         .ndo_get_stats          = mlx4_en_get_stats,
2486         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2487         .ndo_set_mac_address    = mlx4_en_set_mac,
2488         .ndo_validate_addr      = eth_validate_addr,
2489         .ndo_change_mtu         = mlx4_en_change_mtu,
2490         .ndo_do_ioctl           = mlx4_en_ioctl,
2491         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2492         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2493         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2494 #ifdef CONFIG_NET_POLL_CONTROLLER
2495         .ndo_poll_controller    = mlx4_en_netpoll,
2496 #endif
2497         .ndo_set_features       = mlx4_en_set_features,
2498         .ndo_fix_features       = mlx4_en_fix_features,
2499         .ndo_setup_tc           = __mlx4_en_setup_tc,
2500 #ifdef CONFIG_RFS_ACCEL
2501         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2502 #endif
2503         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2504 #ifdef CONFIG_MLX4_EN_VXLAN
2505         .ndo_add_vxlan_port     = mlx4_en_add_vxlan_port,
2506         .ndo_del_vxlan_port     = mlx4_en_del_vxlan_port,
2507         .ndo_features_check     = mlx4_en_features_check,
2508 #endif
2509         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2510 };
2511
2512 static const struct net_device_ops mlx4_netdev_ops_master = {
2513         .ndo_open               = mlx4_en_open,
2514         .ndo_stop               = mlx4_en_close,
2515         .ndo_start_xmit         = mlx4_en_xmit,
2516         .ndo_select_queue       = mlx4_en_select_queue,
2517         .ndo_get_stats          = mlx4_en_get_stats,
2518         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2519         .ndo_set_mac_address    = mlx4_en_set_mac,
2520         .ndo_validate_addr      = eth_validate_addr,
2521         .ndo_change_mtu         = mlx4_en_change_mtu,
2522         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2523         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2524         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2525         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2526         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2527         .ndo_set_vf_rate        = mlx4_en_set_vf_rate,
2528         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2529         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2530         .ndo_get_vf_stats       = mlx4_en_get_vf_stats,
2531         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2532 #ifdef CONFIG_NET_POLL_CONTROLLER
2533         .ndo_poll_controller    = mlx4_en_netpoll,
2534 #endif
2535         .ndo_set_features       = mlx4_en_set_features,
2536         .ndo_fix_features       = mlx4_en_fix_features,
2537         .ndo_setup_tc           = __mlx4_en_setup_tc,
2538 #ifdef CONFIG_RFS_ACCEL
2539         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2540 #endif
2541         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2542 #ifdef CONFIG_MLX4_EN_VXLAN
2543         .ndo_add_vxlan_port     = mlx4_en_add_vxlan_port,
2544         .ndo_del_vxlan_port     = mlx4_en_del_vxlan_port,
2545         .ndo_features_check     = mlx4_en_features_check,
2546 #endif
2547         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2548 };
2549
2550 struct mlx4_en_bond {
2551         struct work_struct work;
2552         struct mlx4_en_priv *priv;
2553         int is_bonded;
2554         struct mlx4_port_map port_map;
2555 };
2556
2557 static void mlx4_en_bond_work(struct work_struct *work)
2558 {
2559         struct mlx4_en_bond *bond = container_of(work,
2560                                                      struct mlx4_en_bond,
2561                                                      work);
2562         int err = 0;
2563         struct mlx4_dev *dev = bond->priv->mdev->dev;
2564
2565         if (bond->is_bonded) {
2566                 if (!mlx4_is_bonded(dev)) {
2567                         err = mlx4_bond(dev);
2568                         if (err)
2569                                 en_err(bond->priv, "Fail to bond device\n");
2570                 }
2571                 if (!err) {
2572                         err = mlx4_port_map_set(dev, &bond->port_map);
2573                         if (err)
2574                                 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
2575                                        bond->port_map.port1,
2576                                        bond->port_map.port2,
2577                                        err);
2578                 }
2579         } else if (mlx4_is_bonded(dev)) {
2580                 err = mlx4_unbond(dev);
2581                 if (err)
2582                         en_err(bond->priv, "Fail to unbond device\n");
2583         }
2584         dev_put(bond->priv->dev);
2585         kfree(bond);
2586 }
2587
2588 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
2589                                    u8 v2p_p1, u8 v2p_p2)
2590 {
2591         struct mlx4_en_bond *bond = NULL;
2592
2593         bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
2594         if (!bond)
2595                 return -ENOMEM;
2596
2597         INIT_WORK(&bond->work, mlx4_en_bond_work);
2598         bond->priv = priv;
2599         bond->is_bonded = is_bonded;
2600         bond->port_map.port1 = v2p_p1;
2601         bond->port_map.port2 = v2p_p2;
2602         dev_hold(priv->dev);
2603         queue_work(priv->mdev->workqueue, &bond->work);
2604         return 0;
2605 }
2606
2607 int mlx4_en_netdev_event(struct notifier_block *this,
2608                          unsigned long event, void *ptr)
2609 {
2610         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
2611         u8 port = 0;
2612         struct mlx4_en_dev *mdev;
2613         struct mlx4_dev *dev;
2614         int i, num_eth_ports = 0;
2615         bool do_bond = true;
2616         struct mlx4_en_priv *priv;
2617         u8 v2p_port1 = 0;
2618         u8 v2p_port2 = 0;
2619
2620         if (!net_eq(dev_net(ndev), &init_net))
2621                 return NOTIFY_DONE;
2622
2623         mdev = container_of(this, struct mlx4_en_dev, nb);
2624         dev = mdev->dev;
2625
2626         /* Go into this mode only when two network devices set on two ports
2627          * of the same mlx4 device are slaves of the same bonding master
2628          */
2629         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2630                 ++num_eth_ports;
2631                 if (!port && (mdev->pndev[i] == ndev))
2632                         port = i;
2633                 mdev->upper[i] = mdev->pndev[i] ?
2634                         netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
2635                 /* condition not met: network device is a slave */
2636                 if (!mdev->upper[i])
2637                         do_bond = false;
2638                 if (num_eth_ports < 2)
2639                         continue;
2640                 /* condition not met: same master */
2641                 if (mdev->upper[i] != mdev->upper[i-1])
2642                         do_bond = false;
2643         }
2644         /* condition not met: 2 salves */
2645         do_bond = (num_eth_ports ==  2) ? do_bond : false;
2646
2647         /* handle only events that come with enough info */
2648         if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2649                 return NOTIFY_DONE;
2650
2651         priv = netdev_priv(ndev);
2652         if (do_bond) {
2653                 struct netdev_notifier_bonding_info *notifier_info = ptr;
2654                 struct netdev_bonding_info *bonding_info =
2655                         &notifier_info->bonding_info;
2656
2657                 /* required mode 1, 2 or 4 */
2658                 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2659                     (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2660                     (bonding_info->master.bond_mode != BOND_MODE_8023AD))
2661                         do_bond = false;
2662
2663                 /* require exactly 2 slaves */
2664                 if (bonding_info->master.num_slaves != 2)
2665                         do_bond = false;
2666
2667                 /* calc v2p */
2668                 if (do_bond) {
2669                         if (bonding_info->master.bond_mode ==
2670                             BOND_MODE_ACTIVEBACKUP) {
2671                                 /* in active-backup mode virtual ports are
2672                                  * mapped to the physical port of the active
2673                                  * slave */
2674                                 if (bonding_info->slave.state ==
2675                                     BOND_STATE_BACKUP) {
2676                                         if (port == 1) {
2677                                                 v2p_port1 = 2;
2678                                                 v2p_port2 = 2;
2679                                         } else {
2680                                                 v2p_port1 = 1;
2681                                                 v2p_port2 = 1;
2682                                         }
2683                                 } else { /* BOND_STATE_ACTIVE */
2684                                         if (port == 1) {
2685                                                 v2p_port1 = 1;
2686                                                 v2p_port2 = 1;
2687                                         } else {
2688                                                 v2p_port1 = 2;
2689                                                 v2p_port2 = 2;
2690                                         }
2691                                 }
2692                         } else { /* Active-Active */
2693                                 /* in active-active mode a virtual port is
2694                                  * mapped to the native physical port if and only
2695                                  * if the physical port is up */
2696                                 __s8 link = bonding_info->slave.link;
2697
2698                                 if (port == 1)
2699                                         v2p_port2 = 2;
2700                                 else
2701                                         v2p_port1 = 1;
2702                                 if ((link == BOND_LINK_UP) ||
2703                                     (link == BOND_LINK_FAIL)) {
2704                                         if (port == 1)
2705                                                 v2p_port1 = 1;
2706                                         else
2707                                                 v2p_port2 = 2;
2708                                 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
2709                                         if (port == 1)
2710                                                 v2p_port1 = 2;
2711                                         else
2712                                                 v2p_port2 = 1;
2713                                 }
2714                         }
2715                 }
2716         }
2717
2718         mlx4_en_queue_bond_work(priv, do_bond,
2719                                 v2p_port1, v2p_port2);
2720
2721         return NOTIFY_DONE;
2722 }
2723
2724 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
2725                                      struct mlx4_en_stats_bitmap *stats_bitmap,
2726                                      u8 rx_ppp, u8 rx_pause,
2727                                      u8 tx_ppp, u8 tx_pause)
2728 {
2729         int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
2730
2731         if (!mlx4_is_slave(dev) &&
2732             (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
2733                 mutex_lock(&stats_bitmap->mutex);
2734                 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
2735
2736                 if (rx_ppp)
2737                         bitmap_set(stats_bitmap->bitmap, last_i,
2738                                    NUM_FLOW_PRIORITY_STATS_RX);
2739                 last_i += NUM_FLOW_PRIORITY_STATS_RX;
2740
2741                 if (rx_pause && !(rx_ppp))
2742                         bitmap_set(stats_bitmap->bitmap, last_i,
2743                                    NUM_FLOW_STATS_RX);
2744                 last_i += NUM_FLOW_STATS_RX;
2745
2746                 if (tx_ppp)
2747                         bitmap_set(stats_bitmap->bitmap, last_i,
2748                                    NUM_FLOW_PRIORITY_STATS_TX);
2749                 last_i += NUM_FLOW_PRIORITY_STATS_TX;
2750
2751                 if (tx_pause && !(tx_ppp))
2752                         bitmap_set(stats_bitmap->bitmap, last_i,
2753                                    NUM_FLOW_STATS_TX);
2754                 last_i += NUM_FLOW_STATS_TX;
2755
2756                 mutex_unlock(&stats_bitmap->mutex);
2757         }
2758 }
2759
2760 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
2761                               struct mlx4_en_stats_bitmap *stats_bitmap,
2762                               u8 rx_ppp, u8 rx_pause,
2763                               u8 tx_ppp, u8 tx_pause)
2764 {
2765         int last_i = 0;
2766
2767         mutex_init(&stats_bitmap->mutex);
2768         bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
2769
2770         if (mlx4_is_slave(dev)) {
2771                 bitmap_set(stats_bitmap->bitmap, last_i +
2772                                          MLX4_FIND_NETDEV_STAT(rx_packets), 1);
2773                 bitmap_set(stats_bitmap->bitmap, last_i +
2774                                          MLX4_FIND_NETDEV_STAT(tx_packets), 1);
2775                 bitmap_set(stats_bitmap->bitmap, last_i +
2776                                          MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
2777                 bitmap_set(stats_bitmap->bitmap, last_i +
2778                                          MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
2779                 bitmap_set(stats_bitmap->bitmap, last_i +
2780                                          MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
2781                 bitmap_set(stats_bitmap->bitmap, last_i +
2782                                          MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
2783         } else {
2784                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
2785         }
2786         last_i += NUM_MAIN_STATS;
2787
2788         bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
2789         last_i += NUM_PORT_STATS;
2790
2791         if (mlx4_is_master(dev))
2792                 bitmap_set(stats_bitmap->bitmap, last_i,
2793                            NUM_PF_STATS);
2794         last_i += NUM_PF_STATS;
2795
2796         mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
2797                                         rx_ppp, rx_pause,
2798                                         tx_ppp, tx_pause);
2799         last_i += NUM_FLOW_STATS;
2800
2801         if (!mlx4_is_slave(dev))
2802                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
2803 }
2804
2805 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2806                         struct mlx4_en_port_profile *prof)
2807 {
2808         struct net_device *dev;
2809         struct mlx4_en_priv *priv;
2810         int i;
2811         int err;
2812
2813         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2814                                  MAX_TX_RINGS, MAX_RX_RINGS);
2815         if (dev == NULL)
2816                 return -ENOMEM;
2817
2818         netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2819         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2820
2821         SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
2822         dev->dev_port = port - 1;
2823
2824         /*
2825          * Initialize driver private data
2826          */
2827
2828         priv = netdev_priv(dev);
2829         memset(priv, 0, sizeof(struct mlx4_en_priv));
2830         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
2831         spin_lock_init(&priv->stats_lock);
2832         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2833         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2834         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2835         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2836         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2837 #ifdef CONFIG_MLX4_EN_VXLAN
2838         INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
2839         INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
2840 #endif
2841 #ifdef CONFIG_RFS_ACCEL
2842         INIT_LIST_HEAD(&priv->filters);
2843         spin_lock_init(&priv->filters_lock);
2844 #endif
2845
2846         priv->dev = dev;
2847         priv->mdev = mdev;
2848         priv->ddev = &mdev->pdev->dev;
2849         priv->prof = prof;
2850         priv->port = port;
2851         priv->port_up = false;
2852         priv->flags = prof->flags;
2853         priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
2854         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2855                         MLX4_WQE_CTRL_SOLICITED);
2856         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2857         priv->tx_ring_num = prof->tx_ring_num;
2858         priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
2859         netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
2860
2861         priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2862                                 GFP_KERNEL);
2863         if (!priv->tx_ring) {
2864                 err = -ENOMEM;
2865                 goto out;
2866         }
2867         priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2868                               GFP_KERNEL);
2869         if (!priv->tx_cq) {
2870                 err = -ENOMEM;
2871                 goto out;
2872         }
2873         priv->rx_ring_num = prof->rx_ring_num;
2874         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2875         priv->cqe_size = mdev->dev->caps.cqe_size;
2876         priv->mac_index = -1;
2877         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2878 #ifdef CONFIG_MLX4_EN_DCB
2879         if (!mlx4_is_slave(priv->mdev->dev)) {
2880                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
2881                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2882                 } else {
2883                         en_info(priv, "enabling only PFC DCB ops\n");
2884                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2885                 }
2886         }
2887 #endif
2888
2889         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2890                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2891
2892         /* Query for default mac and max mtu */
2893         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2894
2895         if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
2896             MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
2897                 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
2898
2899         /* Set default MAC */
2900         dev->addr_len = ETH_ALEN;
2901         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2902         if (!is_valid_ether_addr(dev->dev_addr)) {
2903                 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2904                        priv->port, dev->dev_addr);
2905                 err = -EINVAL;
2906                 goto out;
2907         } else if (mlx4_is_slave(priv->mdev->dev) &&
2908                    (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
2909                 /* Random MAC was assigned in mlx4_slave_cap
2910                  * in mlx4_core module
2911                  */
2912                 dev->addr_assign_type |= NET_ADDR_RANDOM;
2913                 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2914         }
2915
2916         memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
2917
2918         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2919                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2920         err = mlx4_en_alloc_resources(priv);
2921         if (err)
2922                 goto out;
2923
2924         /* Initialize time stamping config */
2925         priv->hwtstamp_config.flags = 0;
2926         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2927         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2928
2929         /* Allocate page for receive rings */
2930         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2931                                 MLX4_EN_PAGE_SIZE);
2932         if (err) {
2933                 en_err(priv, "Failed to allocate page for rx qps\n");
2934                 goto out;
2935         }
2936         priv->allocated = 1;
2937
2938         /*
2939          * Initialize netdev entry points
2940          */
2941         if (mlx4_is_master(priv->mdev->dev))
2942                 dev->netdev_ops = &mlx4_netdev_ops_master;
2943         else
2944                 dev->netdev_ops = &mlx4_netdev_ops;
2945         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2946         netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2947         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2948
2949         dev->ethtool_ops = &mlx4_en_ethtool_ops;
2950
2951         /*
2952          * Set driver features
2953          */
2954         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2955         if (mdev->LSO_support)
2956                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2957
2958         dev->vlan_features = dev->hw_features;
2959
2960         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2961         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2962                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2963                         NETIF_F_HW_VLAN_CTAG_FILTER;
2964         dev->hw_features |= NETIF_F_LOOPBACK |
2965                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
2966
2967         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
2968                 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
2969                         NETIF_F_HW_VLAN_STAG_FILTER;
2970                 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
2971         }
2972
2973         if (mlx4_is_slave(mdev->dev)) {
2974                 int phv;
2975
2976                 err = get_phv_bit(mdev->dev, port, &phv);
2977                 if (!err && phv) {
2978                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
2979                         priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
2980                 }
2981         } else {
2982                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
2983                     !(mdev->dev->caps.flags2 &
2984                       MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2985                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
2986         }
2987
2988         if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
2989                 dev->hw_features |= NETIF_F_RXFCS;
2990
2991         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
2992                 dev->hw_features |= NETIF_F_RXALL;
2993
2994         if (mdev->dev->caps.steering_mode ==
2995             MLX4_STEERING_MODE_DEVICE_MANAGED &&
2996             mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
2997                 dev->hw_features |= NETIF_F_NTUPLE;
2998
2999         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3000                 dev->priv_flags |= IFF_UNICAST_FLT;
3001
3002         /* Setting a default hash function value */
3003         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3004                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3005         } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3006                 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3007         } else {
3008                 en_warn(priv,
3009                         "No RSS hash capabilities exposed, using Toeplitz\n");
3010                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3011         }
3012
3013         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3014                 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3015                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3016                                     NETIF_F_GSO_PARTIAL;
3017                 dev->features    |= NETIF_F_GSO_UDP_TUNNEL |
3018                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3019                                     NETIF_F_GSO_PARTIAL;
3020                 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3021         }
3022
3023         mdev->pndev[port] = dev;
3024         mdev->upper[port] = NULL;
3025
3026         netif_carrier_off(dev);
3027         mlx4_en_set_default_moderation(priv);
3028
3029         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
3030         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3031
3032         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3033
3034         /* Configure port */
3035         mlx4_en_calc_rx_buf(dev);
3036         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3037                                     priv->rx_skb_size + ETH_FCS_LEN,
3038                                     prof->tx_pause, prof->tx_ppp,
3039                                     prof->rx_pause, prof->rx_ppp);
3040         if (err) {
3041                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3042                        priv->port, err);
3043                 goto out;
3044         }
3045
3046         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3047                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3048                 if (err) {
3049                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3050                                err);
3051                         goto out;
3052                 }
3053         }
3054
3055         /* Init port */
3056         en_warn(priv, "Initializing port\n");
3057         err = mlx4_INIT_PORT(mdev->dev, priv->port);
3058         if (err) {
3059                 en_err(priv, "Failed Initializing port\n");
3060                 goto out;
3061         }
3062         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3063
3064         /* Initialize time stamp mechanism */
3065         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3066                 mlx4_en_init_timestamp(mdev);
3067
3068         queue_delayed_work(mdev->workqueue, &priv->service_task,
3069                            SERVICE_TASK_DELAY);
3070
3071         mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3072                                  mdev->profile.prof[priv->port].rx_ppp,
3073                                  mdev->profile.prof[priv->port].rx_pause,
3074                                  mdev->profile.prof[priv->port].tx_ppp,
3075                                  mdev->profile.prof[priv->port].tx_pause);
3076
3077         err = register_netdev(dev);
3078         if (err) {
3079                 en_err(priv, "Netdev registration failed for port %d\n", port);
3080                 goto out;
3081         }
3082
3083         priv->registered = 1;
3084         devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port),
3085                                   dev);
3086
3087         return 0;
3088
3089 out:
3090         mlx4_en_destroy_netdev(dev);
3091         return err;
3092 }
3093
3094 int mlx4_en_reset_config(struct net_device *dev,
3095                          struct hwtstamp_config ts_config,
3096                          netdev_features_t features)
3097 {
3098         struct mlx4_en_priv *priv = netdev_priv(dev);
3099         struct mlx4_en_dev *mdev = priv->mdev;
3100         int port_up = 0;
3101         int err = 0;
3102
3103         if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3104             priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3105             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3106             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3107                 return 0; /* Nothing to change */
3108
3109         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3110             (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3111             (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3112                 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3113                 return -EINVAL;
3114         }
3115
3116         mutex_lock(&mdev->state_lock);
3117         if (priv->port_up) {
3118                 port_up = 1;
3119                 mlx4_en_stop_port(dev, 1);
3120         }
3121
3122         mlx4_en_free_resources(priv);
3123
3124         en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n",
3125                 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX));
3126
3127         priv->hwtstamp_config.tx_type = ts_config.tx_type;
3128         priv->hwtstamp_config.rx_filter = ts_config.rx_filter;
3129
3130         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3131                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3132                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3133                 else
3134                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3135         } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3136                 /* RX time-stamping is OFF, update the RX vlan offload
3137                  * to the latest wanted state
3138                  */
3139                 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3140                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3141                 else
3142                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3143         }
3144
3145         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3146                 if (features & NETIF_F_RXFCS)
3147                         dev->features |= NETIF_F_RXFCS;
3148                 else
3149                         dev->features &= ~NETIF_F_RXFCS;
3150         }
3151
3152         /* RX vlan offload and RX time-stamping can't co-exist !
3153          * Regardless of the caller's choice,
3154          * Turn Off RX vlan offload in case of time-stamping is ON
3155          */
3156         if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3157                 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3158                         en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3159                 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3160         }
3161
3162         err = mlx4_en_alloc_resources(priv);
3163         if (err) {
3164                 en_err(priv, "Failed reallocating port resources\n");
3165                 goto out;
3166         }
3167         if (port_up) {
3168                 err = mlx4_en_start_port(dev);
3169                 if (err)
3170                         en_err(priv, "Failed starting port\n");
3171         }
3172
3173 out:
3174         mutex_unlock(&mdev->state_lock);
3175         netdev_features_change(dev);
3176         return err;
3177 }